Title:
METHOD FOR POWDER PRESSURE MOLDING, CYLINDER WITH COLLAR MANUFACTURED THEREBY AND CASE FOR ELECTRIC COMPONENT
Document Type and Number:
Japanese Patent JP3704433
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To easily mold a cylinder with a bottom having a collar at the outer periphery by powder pressure molding.
SOLUTION: The method for powder pressure molding using a mold having a mortar-like body 8 including a step on the inner periphery, a lower punch 6, a first upper punch 4 provided at a position corresponding to the step and a second upper punch 4 provided at its inside comprises the steps of charging powder in a space formed of the mortar-like body 8 and the punch 6, lowering the punch 4, pressurizing the vicinity of the step of the mortar-like body 8, and then pressurizing the punches 4, 5.
Inventors:
Yoshihiro Matsumoto
Application Number:
JP24428698A
Publication Date:
October 12, 2005
Filing Date:
August 31, 1998
Export Citation:
Assignee:
Kyocera Corporation
International Classes:
B28B1/00; B28B3/02; B28B3/08; B28B21/88; H01H11/00; H01H37/54; (IPC1-7): B28B3/08
Domestic Patent References:
JP9115401A | ||||
JP62042802A | ||||
JP6114814A | ||||
JP7070608A |